Grace star John Simm has made a huge admission ahead of his character's season six mistake. The hit crime drama, which is based in Brighton and Hove , stars John in the title role of Detective Superintendent Roy Grace, a dogged detective who, haunted by the disappearance of his wife, solves a variety of cases. The fan-favourite series is set to return for a sixth instalment this weekend (Sunday, March 29), with lead actor John reprising his role as Roy Grace. He will be reunited with his co-